Mark Zuckerberg gets special coaching for gruelling Congress hearing on Facebook data breach

Facebook founder Mark Zuckerberg has been receiving special coaching on how to present himself when he appears before US politicians demanding to know what he is doing to protect users' data, and how Russia was able to use his platform to allegedly meddle in the 2016 presidential election. Amid continuing controversy over the inappropriate harvesting of the data of up to 87 million Facebook users by British political consulting firm Cambridge Analytica, Mr Zuckerberg will try and reassure Congress he is taking the concerns of them and the general public seriously. He will also try to deflect the efforts of those who favour more stringent government regulation. "It's clear now that we didn't do enough to prevent these tools from being used for harm," he is expected to tell the House Committee on Energy and Commerce, according to written testimony released ahead of his appearance. "We didn't take a broad enough view of our responsibility, and that was a big mistake. It was my mistake, and I'm sorry. I started Facebook, I run it, and I'm responsible for what happens here."